Guard cells are located in the leaf epidermis and pairs of guard cells surround and form stomatal pores, which regulate CO2 influx from the atmosphere into the leaves for photosynthetic carbon fixation.
Stomatal guard cells also regulate water loss of plants via transpiration to the atmosphere.
Answer: A.They contain plants that purify water.
Answer:
C.. A hypothesis is a possible, testable explanation for a scientific question
C. this individual is a male since he has X and Y chromosomes
